Catalan numbers for triangulations gambler’s ruin binary…
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Catalan numbers for
- triangulations
- gambler’s ruin
- binary trees
- trees
…from the Flajolet/Sedgewick coursera analysis of algorithms
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in R:
catalan <- function(n) { if(n
(This is slow above catalan(10)
though, so here’s a memoised version. Then if you want to run above catalan(250)
you’ll need to adjust options(expressions=5e3)
to something higher; otherwise the nesting of calls goes too deep.)
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